517212549 has 12 divisors (see below), whose sum is σ = 853811296. Its totient is φ = 295549992.

The previous prime is 517212541. The next prime is 517212551. The reversal of 517212549 is 945212715.

It is not a de Polignac number, because 517212549 - 2³ = 517212541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517212541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4104799 + ... + 4104924.

Almost surely, 2^517212549 is an apocalyptic number.

It is an amenable number.

517212549 is a deficient number, since it is larger than the sum of its proper divisors (336598747).

517212549 is a wasteful number, since it uses less digits than its factorization.

517212549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8209736 (or 8209733 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 517212549 is about 22742.3074686805. The cubic root of 517212549 is about 802.7057078852.

The spelling of 517212549 in words is "five hundred seventeen million, two hundred twelve thousand, five hundred forty-nine".